TY - JOUR
T1 - Deformation behavior of Zr- and Ni-based bulk glassy alloys
AU - Louzguine-Luzgin, Dmitri V.
AU - Zeng, Yuqiao
AU - Setyawan, Albertus Deny Heri
AU - Nishiyama, Nobuyuki
AU - Kato, Hidemi
AU - Saida, Junji
AU - Inoue, Akihisa
PY - 2007/4
Y1 - 2007/4
N2 - This article presents a comparative study of the deformation-induced structural changes observed within a glassy phase in two different Zr- and Ni-based alloys. Ductile Zr65Al7.5Ni10Pd17.5 bulk glassy alloy, which exhibits dynamic nanocrystallization forming a crystalline cubic phase within shear bands on plastic deformation, is presumed to contain pre-existing nuclei. On the contrary, no obvious dynamic nanocrystallization is observed within the shear bands in the glassy phase of the Ni50Pd30P20 bulk alloy, which, however, contains clear medium-range order zones on the order of 1 nm in size in an as-solidified state. This alloy exhibits nucleation and growth-transformation behavior on heating. At the same time, clear nucleation and growth of the cubic Ni-based phase are observed near the microcrack area in the deformed sample. High energy released at the time of the microcrack propagation caused nanocrystallization and blockage of the crack-tip propagation.
AB - This article presents a comparative study of the deformation-induced structural changes observed within a glassy phase in two different Zr- and Ni-based alloys. Ductile Zr65Al7.5Ni10Pd17.5 bulk glassy alloy, which exhibits dynamic nanocrystallization forming a crystalline cubic phase within shear bands on plastic deformation, is presumed to contain pre-existing nuclei. On the contrary, no obvious dynamic nanocrystallization is observed within the shear bands in the glassy phase of the Ni50Pd30P20 bulk alloy, which, however, contains clear medium-range order zones on the order of 1 nm in size in an as-solidified state. This alloy exhibits nucleation and growth-transformation behavior on heating. At the same time, clear nucleation and growth of the cubic Ni-based phase are observed near the microcrack area in the deformed sample. High energy released at the time of the microcrack propagation caused nanocrystallization and blockage of the crack-tip propagation.
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U2 - 10.1557/jmr.2007.0126
DO - 10.1557/jmr.2007.0126
M3 - Article
AN - SCOPUS:34247480610
VL - 22
SP - 1087
EP - 1092
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 4
ER -